seaton



(No Model.) v 2 Sheets-Sheet 1. A. E.-.SEATON.- HYDRAULIC JAGK.

No. 511,096. Patented Dec. 19,1893.

QQZZW ENZOZ? (No Model.) I 2 SheetsShet 2 A. E. SEATON.

'HYDRAULIG JACKx T No. 511,096. Patented Dec. 19, 1893.

WITNESSES m if UNITED STATES Pnrrmwr OFFICE.

ALBERT EDl-VARD SEATON, OF HULL, ENGLAND.

HYDRAU LIC JACK.

SPECIFICATION forming part of Letters Patent N o. 51 1,096, dated December 19, 1893.

' Application filed February 3, 1893. Serial No. 480,916- (No model.)

To all whom it may concern.-

' Be it known that I, ALBERT EDWARD SEA- TON, a subject of the Queen of Great Britain, residing at Hull, in the county of York, England, have invented certain new and useful Improvements in Hydraulic Jacks, applicable to forcing the coupling-bolts out of marineengine, propeiler, and other shafting, and the like purposes, of which the following is a specification.

My invention relates to improvements in hydraulic jacks which are applicable to forcing the coupling bolts out of marine engine, propeller and other shafting and the like purposes and the objects of my improvements are to provide an efiective portable appliance for forcing the bolts out of the couplings of marine engine, propeller or other shafting, or for other similar purposes, thereby avoiding the delay, expense and injury to the couplings and bolts which are sometimes caused by the means ordinarily employed. I attain these objects in the manner illustrated in the accompanying two sheets of drawings, in which-- Figure 1. represents a bolt forcing jack {partly in section) placed in position for forcing a belt out of a shaft coupling. Fig. 2. is a section through the frame of the jack looking toward the claw end of the same. Figs. 3 and 4. represent an additional appliance to facilitate the use of a hammer when it is desired to give an impact to the ram when the hydraulic pressure is full on. Fig. 5. represents the'bolt forcing jack converted into a lifting jack by means of a specially adapted appliance or appliances. Fig. 6. is a section through the frame of the jack so converted looking toward the claw end of the same. Figs. 7., 8. and 9. represent the specially adapted appliance or appliances hereinbefore referred to for converting the bolt forcing jack into a lifting jack.

Similar-letters refer tosimi lar parts th rou ghout the several views.

I construct my improved forcing jack in form somewhat resembling a hydraulic punch bear or riveter, the head being fitted with hydraulic ram, power pump, valves and other necessary appliances and fittings, similar to those usually employed in hydraulic jacks,

punching bears, and the like hydraulic implements, and so far as this part of my improved appliance is concerned, I lay no claim as to novelty.

a, is the frame of my improved jack, Z), the head end of the same which contains the ram, 0, and forms one end of what may be called the jaw, and corresponds to the punch or ram end of a hydraulic punch bear or riveter. The other end of the jaw, d, which corresponds to the die end of apunching bear or riveter, and which for convenience I will call the claw end, is made with a semicircular opening large enough to allow of the head of a bolt to clear when being forced outof the coupling, sufiicient surface being provided round the opening of this end of the jack to givea good hold or hearing on both sides of the head of the bolt during the operation. 1

9, represents a shft coupling in section.

f, represents a coupling bolt.

The jaw of my improved jack, from the head or ram end I), to the claw end, d, is made long enough and deep enough to span both flanges of the coupling, e, and the nut end of the bolt, f, when in position, so that the center of the ram, 0, and the center of the space at the claw end may be in line with the center of the bolt; thus when the jack is properly adjusted into position and pressure is applied to the ram by means of the pump,

the endof the ram which is suitably formed for the purpose is forced against the end of the bolt, which as the pressure increases is forced out of the coupling; the resistance to the ram being received by the claw end of the jack which as before stated is fixed at the opposite side of the coupling.

The stirrup formed appliance g, illustrated :in Figs. 3 and 4, Sheet 1, is to facilitate the other suitable metal, the form of the frame.

For the convenience of moving the jack about and fixing it into position, a loop or I shackle may be so placed in the frame that when the jack is suspended, it will hang horizontally or in any other position which may be found convenient. j, is a hole in theframe of the jack for such lifting shackle or loop.

Although the jack herein described is more particularly designed forvforcing bolts, its usefulness is by no means restricted to such purpose as by using a specially adapted appliance in the form of a bolt, It, so as to extend the action of the ram beyond the claw end of the jack it can be at once used as a lifting jack.

l,is a bush or liner provided with ribsor projections, 'n, n, corresponding to recesses, 0, 0, provided in the claw end of the jackvby means of which bush the bolt, is, may be guided in .theclaw end of the jack, m, being a pin or set screw by means of which "thebush, l, is kept in position. In some cases for the greater convenience of such a combination of uses, a specially adaptedappliance orappliances can besupplied with the jack, bymeans of which my improved forcing jack can'be readily converted into a lifting jack.

As a further modification, in lieu of the specially adapted appliance herein described as a bush or liner and illustrated in Figs. 8 and 9, the speciallyv adapted appliance,k, in

the form of a bolt illustrated in Fig. 7, may, as shown by the dotted lines, have the stalk 0r shank increased in size at its lower end to fit the opening in the claw end of the jack and is retained in position by the ribs, '11., 01., formed on both sides of the bolt, is, corresponding to the groove or grooves, o, o, in the claw end of the jack so that when the bolt, is, is inserted endwise into the claw end of the jack it can only slip out in one direction, viz., that in which it is inserted.

Having fully described my invention, what I desire to claim and secure by Letters Patent 1s 1. In a hydraulicjack the combination with a yoke of a ram placed in one end thereof, grooved claws formed on the otherpend a hollow guide pieceengaging the groovesof said claws and a bolt 7c actuated by said ram and guided by saidguide piece substantially as set forth.

2. Ina hydraulicjackthe combination with a yoke-of a ram placed in one end thereof, grooved claws formed on the other end, ahollow guide piece adapted to be set into said grooves at-will, a bolt actuated by said ram and guidedby said guide piece and a stirrup arranged to be struck by a hammer said stirrup being mounted on said yoke for starting said ram substantially as set forth.

ALBERT EDWARD SEATON. Witnesses:

WM. H. Y. H. HYDE, FREDK. W. BAILEY. 

